TBC

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Gen One-

Father: ThiefTaker

Mother: Polaris

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Siblings During ThiefTaker's Reign.

Sirius A

Sirius B is one of the most massive white dwarfs known. With a mass of 1.02 M_☉, it is almost double the 0.5–0.6 M_☉ average. This mass is packed into a volume roughly equal to the Earth's.^[65] The current surface temperature is 25,200 K.^[12] Because there is no internal heat source, Sirius B will steadily cool as the remaining heat is radiated into space over more than two billion years.^[101]

A white dwarf forms after a star has evolved from the main sequence and then passed through a red giant stage. This occurred when Sirius B was less than half its current age, around 120 million years ago. The original star had an estimated 5 M_☉^[12] and was a B-type star (roughly B4–5)^[102][103] when it was still on the main sequence. While it passed through the red giant stage, Sirius B may have enriched the metallicity of its companion.

This star is primarily composed of a carbon–oxygen mixture that was generated by helium fusion in the progenitor star.^[12] This is overlaid by an envelope of lighter elements, with the materials segregated by mass because of the high surface gravity.^[104] The outer atmosphere of Sirius B is now almost pure hydrogen—the element with the lowest mass—and no other elements are seen in its spectrum.^[105]